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298 lines
9.0 KiB
298 lines
9.0 KiB
/*
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Cgi/template routines for the /wifi url.
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*/
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
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* this notice you can do whatever you want with this stuff. If we meet some day,
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* and you think this stuff is worth it, you can buy me a beer in return.
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* ----------------------------------------------------------------------------
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*/
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#include <esp8266.h>
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#include "cgiwifi.h"
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//Enable this to disallow any changes in AP settings
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//#define DEMO_MODE
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//WiFi access point data
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typedef struct {
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char ssid[32];
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char rssi;
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char enc;
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} ApData;
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//Scan result
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typedef struct {
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char scanInProgress; //if 1, don't access the underlying stuff from the webpage.
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ApData **apData;
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int noAps;
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} ScanResultData;
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//Static scan status storage.
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static ScanResultData cgiWifiAps;
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#define CONNTRY_IDLE 0
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#define CONNTRY_WORKING 1
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#define CONNTRY_SUCCESS 2
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#define CONNTRY_FAIL 3
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//Connection result var
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static int connTryStatus=CONNTRY_IDLE;
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static ETSTimer resetTimer;
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//Callback the code calls when a wlan ap scan is done. Basically stores the result in
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//the cgiWifiAps struct.
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void ICACHE_FLASH_ATTR wifiScanDoneCb(void *arg, STATUS status) {
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int n;
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struct bss_info *bss_link = (struct bss_info *)arg;
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os_printf("wifiScanDoneCb %d\n", status);
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if (status!=OK) {
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cgiWifiAps.scanInProgress=0;
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return;
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}
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//Clear prev ap data if needed.
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if (cgiWifiAps.apData!=NULL) {
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for (n=0; n<cgiWifiAps.noAps; n++) os_free(cgiWifiAps.apData[n]);
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os_free(cgiWifiAps.apData);
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}
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//Count amount of access points found.
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n=0;
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while (bss_link != NULL) {
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bss_link = bss_link->next.stqe_next;
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n++;
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}
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//Allocate memory for access point data
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cgiWifiAps.apData=(ApData **)os_malloc(sizeof(ApData *)*n);
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cgiWifiAps.noAps=n;
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os_printf("Scan done: found %d APs\n", n);
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//Copy access point data to the static struct
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n=0;
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bss_link = (struct bss_info *)arg;
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while (bss_link != NULL) {
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if (n>=cgiWifiAps.noAps) {
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//This means the bss_link changed under our nose. Shouldn't happen!
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//Break because otherwise we will write in unallocated memory.
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os_printf("Huh? I have more than the allocated %d aps!\n", cgiWifiAps.noAps);
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break;
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}
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//Save the ap data.
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cgiWifiAps.apData[n]=(ApData *)os_malloc(sizeof(ApData));
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cgiWifiAps.apData[n]->rssi=bss_link->rssi;
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cgiWifiAps.apData[n]->enc=bss_link->authmode;
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strncpy(cgiWifiAps.apData[n]->ssid, (char*)bss_link->ssid, 32);
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bss_link = bss_link->next.stqe_next;
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n++;
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}
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//We're done.
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cgiWifiAps.scanInProgress=0;
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}
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//Routine to start a WiFi access point scan.
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static void ICACHE_FLASH_ATTR wifiStartScan() {
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// int x;
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if (cgiWifiAps.scanInProgress) return;
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cgiWifiAps.scanInProgress=1;
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wifi_station_scan(NULL, wifiScanDoneCb);
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}
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//This CGI is called from the bit of AJAX-code in wifi.tpl. It will initiate a
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//scan for access points and if available will return the result of an earlier scan.
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//The result is embedded in a bit of JSON parsed by the javascript in wifi.tpl.
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int ICACHE_FLASH_ATTR cgiWiFiScan(HttpdConnData *connData) {
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int len;
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int i;
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char buff[1024];
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httpdStartResponse(connData, 200);
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httpdHeader(connData, "Content-Type", "text/json");
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httpdEndHeaders(connData);
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if (cgiWifiAps.scanInProgress==1) {
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//We're still scanning. Tell Javascript code that.
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len=os_sprintf(buff, "{\n \"result\": { \n\"inProgress\": \"1\"\n }\n}\n");
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httpdSend(connData, buff, len);
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} else {
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//We have a scan result. Pass it on.
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len=os_sprintf(buff, "{\n \"result\": { \n\"inProgress\": \"0\", \n\"APs\": [\n");
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httpdSend(connData, buff, len);
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if (cgiWifiAps.apData==NULL) cgiWifiAps.noAps=0;
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for (i=0; i<cgiWifiAps.noAps; i++) {
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//Fill in json code for an access point
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len=os_sprintf(buff, "{\"essid\": \"%s\", \"rssi\": \"%d\", \"enc\": \"%d\"}%s\n",
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cgiWifiAps.apData[i]->ssid, cgiWifiAps.apData[i]->rssi,
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cgiWifiAps.apData[i]->enc, (i==cgiWifiAps.noAps-1)?"":",");
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httpdSend(connData, buff, len);
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}
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len=os_sprintf(buff, "]\n}\n}\n");
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httpdSend(connData, buff, len);
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//Also start a new scan.
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wifiStartScan();
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}
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return HTTPD_CGI_DONE;
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}
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//Temp store for new ap info.
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static struct station_config stconf;
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//This routine is ran some time after a connection attempt to an access point. If
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//the connect succeeds, this gets the module in STA-only mode.
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static void ICACHE_FLASH_ATTR resetTimerCb(void *arg) {
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int x=wifi_station_get_connect_status();
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if (x==STATION_GOT_IP) {
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//Go to STA mode. This needs a reset, so do that.
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os_printf("Got IP. Going into STA mode..\n");
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wifi_set_opmode(1);
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system_restart();
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} else {
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connTryStatus=CONNTRY_FAIL;
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os_printf("Connect fail. Not going into STA-only mode.\n");
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//Maybe also pass this through on the webpage?
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}
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}
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//Actually connect to a station. This routine is timed because I had problems
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//with immediate connections earlier. It probably was something else that caused it,
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//but I can't be arsed to put the code back :P
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static void ICACHE_FLASH_ATTR reassTimerCb(void *arg) {
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int x;
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os_printf("Try to connect to AP....\n");
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wifi_station_disconnect();
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wifi_station_set_config(&stconf);
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wifi_station_connect();
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x=wifi_get_opmode();
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connTryStatus=CONNTRY_WORKING;
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if (x!=1) {
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//Schedule disconnect/connect
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os_timer_disarm(&resetTimer);
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os_timer_setfn(&resetTimer, resetTimerCb, NULL);
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os_timer_arm(&resetTimer, 15000, 0); //time out after 15 secs of trying to connect
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}
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}
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//This cgi uses the routines above to connect to a specific access point with the
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//given ESSID using the given password.
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int ICACHE_FLASH_ATTR cgiWiFiConnect(HttpdConnData *connData) {
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char essid[128];
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char passwd[128];
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static ETSTimer reassTimer;
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if (connData->conn==NULL) {
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//Connection aborted. Clean up.
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return HTTPD_CGI_DONE;
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}
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httpdFindArg(connData->post->buff, "essid", essid, sizeof(essid));
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httpdFindArg(connData->post->buff, "passwd", passwd, sizeof(passwd));
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os_strncpy((char*)stconf.ssid, essid, 32);
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os_strncpy((char*)stconf.password, passwd, 64);
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os_printf("Try to connect to AP %s pw %s\n", essid, passwd);
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//Schedule disconnect/connect
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os_timer_disarm(&reassTimer);
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os_timer_setfn(&reassTimer, reassTimerCb, NULL);
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//Set to 0 if you want to disable the actual reconnecting bit
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#ifdef DEMO_MODE
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httpdRedirect(connData, "/wifi");
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#else
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os_timer_arm(&reassTimer, 500, 0);
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httpdRedirect(connData, "connecting.html");
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#endif
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return HTTPD_CGI_DONE;
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}
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//This cgi uses the routines above to connect to a specific access point with the
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//given ESSID using the given password.
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int ICACHE_FLASH_ATTR cgiWiFiSetMode(HttpdConnData *connData) {
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int len;
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char buff[1024];
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if (connData->conn==NULL) {
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//Connection aborted. Clean up.
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return HTTPD_CGI_DONE;
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}
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len=httpdFindArg(connData->getArgs, "mode", buff, sizeof(buff));
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if (len!=0) {
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os_printf("cgiWifiSetMode: %s\n", buff);
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#ifndef DEMO_MODE
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wifi_set_opmode(atoi(buff));
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system_restart();
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#endif
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}
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httpdRedirect(connData, "/wifi");
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return HTTPD_CGI_DONE;
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}
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int ICACHE_FLASH_ATTR cgiWiFiConnStatus(HttpdConnData *connData) {
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char buff[1024];
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int len;
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struct ip_info info;
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int st=wifi_station_get_connect_status();
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httpdStartResponse(connData, 200);
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httpdHeader(connData, "Content-Type", "text/json");
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httpdEndHeaders(connData);
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if (connTryStatus==CONNTRY_IDLE) {
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len=os_sprintf(buff, "{\n \"status\": \"idle\"\n }\n");
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} else if (connTryStatus==CONNTRY_WORKING || connTryStatus==CONNTRY_SUCCESS) {
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if (st==STATION_GOT_IP) {
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wifi_get_ip_info(0, &info);
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len=os_sprintf(buff, "{\n \"status\": \"success\",\n \"ip\": \"%d.%d.%d.%d\" }\n",
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(info.ip.addr>>0)&0xff, (info.ip.addr>>8)&0xff,
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(info.ip.addr>>16)&0xff, (info.ip.addr>>24)&0xff);
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//Reset into AP-only mode sooner.
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os_timer_disarm(&resetTimer);
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os_timer_setfn(&resetTimer, resetTimerCb, NULL);
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os_timer_arm(&resetTimer, 1000, 0);
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} else {
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len=os_sprintf(buff, "{\n \"status\": \"working\"\n }\n");
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}
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} else {
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len=os_sprintf(buff, "{\n \"status\": \"fail\"\n }\n");
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}
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httpdSend(connData, buff, len);
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return HTTPD_CGI_DONE;
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}
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//Template code for the WLAN page.
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int ICACHE_FLASH_ATTR tplWlan(HttpdConnData *connData, char *token, void **arg) {
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char buff[1024];
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int x;
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static struct station_config stconf;
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if (token==NULL) return HTTPD_CGI_DONE;
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wifi_station_get_config(&stconf);
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os_strcpy(buff, "Unknown");
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if (os_strcmp(token, "WiFiMode")==0) {
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x=wifi_get_opmode();
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if (x==1) os_strcpy(buff, "Client");
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if (x==2) os_strcpy(buff, "SoftAP");
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if (x==3) os_strcpy(buff, "STA+AP");
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} else if (os_strcmp(token, "currSsid")==0) {
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os_strcpy(buff, (char*)stconf.ssid);
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} else if (os_strcmp(token, "WiFiPasswd")==0) {
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os_strcpy(buff, (char*)stconf.password);
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} else if (os_strcmp(token, "WiFiapwarn")==0) {
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x=wifi_get_opmode();
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if (x==2) {
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os_strcpy(buff, "<b>Can't scan in this mode.</b> Click <a href=\"setmode.cgi?mode=3\">here</a> to go to STA+AP mode.");
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} else {
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os_strcpy(buff, "Click <a href=\"setmode.cgi?mode=2\">here</a> to go to standalone AP mode.");
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}
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}
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httpdSend(connData, buff, -1);
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return HTTPD_CGI_DONE;
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}
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